Trolley foe underground conduits



(No Model.) 2 SheetsSheet 1.

O. M. YOST.

TROLLEY FOR UNDERGROUND 001555555.

,No. 553,772. Patented Feb. 5, 1595.

No Modei.) 2 Sheets-Sheet 2.

. O Tf TROLLEY FOR UNDERGROUND GONDUITS. No. 533,772. Patented Feb. 5, 1g95.

m5 xmms versus co FHGYO-UTNQ, wasmuc'rou. n, c.

rrnn STATES PATENT uric.

CHARLES M. YOST, OF WASHINGTON, DISTRICT OF COLUMBIA, ASS'IGNOR OF FORTY-ONE EIGHTIETHS TO GABRIEL EDMONSTON, LEMUEL F. BURNER, AND GEORGIANNA T. KING, OF. SAME PLACE.

TROLLEY FOR UNDERGROUND CONDUITS.

SPECIFICATION forming part of Letters Patent No. 533,772, dated February 5, 1895.

Application filed November 3, 1894- Serial No. 527,828. (No model.)

To ctZZ whom it may concern: ings, which, with the letters of reference Be it known that I, CHARLES M. YosT, a marked thereon, form a part of this specificitizen of the United States, residing at lVashcation, and in whichington, in the District of Columbia, have in- Figure 1 is a vertical cross section through 5 vented certain new and useful Improvements a conduit, portions of which are broken away,

in Trolleys for Underground Railway Sysshowing my inventionin end elevation. Fig. terns; and I do declare the following to be a 2 is a plan view with portions broken away, full, clear, and exact description of the inof the parts constituting my present invenvention, such as will enable others skilled in tion. Fig. 3 is a vertical section, with por- IO the art to which it appertains to make and tions broken away, the sections being taken use the same, reference being had to the acon the line 3-3 of Fig. 2. companying drawings, and to the letters of Like lettersof reference indicate like parts reference marked thereon, which form a part throughout the several views. of this specification. Referring now to the details of the draw- 15 This invention relates to certain new and ings by letter, A designates the yokes; B, the useful improvements in trolleys for underslot; 0, the main conductor; D,theconductor ground electric railway systems, and it has bars attached to the yokes, and E the confor its objects among others to provide a simductors leading from the main conductor to ple and eificient trolley and means for supthe conductor bars. This, however, forms no 20 porting the same, with means for reversing part of the present invention, being shown the same when the end of the line is reached, and claimed in a companion application filed or when for any reason it becomes necessary by me of even date herewith. or desirable to reverse the direction of move- F is the plate or bar depending from the ment of the car. Iprovide a plate or support car and working through the slot. It is at- 25 carried by the trolley-plate which depends fixed to the plate or base piece G and has run 7 5 from the car and works through the slot. 0n Ding vertically through it the conductors f. this support the trolley-supporting arms are These conductors at their lower ends branch swiveled and means are provided for simulout horizontally in opposite directions as seen taneously reversing the two wheels, as well best in Fig.2 and are connected with the disks 3c as for limiting their movement in an upward H which are secured to the plate or base piece direction when off the conductor bars. The G in any suitable manner,one upon each side trolley arms are normally supported upon of the center thereof as shown so that one yielding means, as spring brackets or supshall be upon each side of the slot B. ports which are depressed when it is desired Passed vertically centrally through each 5 to turn the trolley arms upon' their swivels. disk and through the plate G is a pin 1 the In some instances I provide a guide and upper end of which is bifurcated and between guard for the said arms in their movement as the bifurcations of which is pivoted on a horithey are reversed. zontal pivot j a trolley-supporting arm J the Other objects and advantages of the infree end of which is bifurcated as shown in 0 vention will hereinafter appear and the novel Figs. 1 and 2 and in the bifurcation of which features thereof will be specifically defined is journaled a trolley wheel K of any well by the appended claims. known or approved form of construction ar- The invention in this instance resides in ranged in position to travel upon the conducthe peculiar combinations, and the constructor bars D as shown. The pivot-end of this 5 tion, arrangement and adaptation of parts, arm is rounded as seen in Fig. 3 and is proall as more fully hereinafter described, shown vided with a lug or tail-piece j as shown in in the drawings and then particularly pointed Figs. 1 and 3 which serves to limit the upward out in the claims. movement of the wheel and arm by engaging The invention, in its preferable form, is the disk as will be understood from reference 50 clearly illustrated in the accompanying drawto Fig. 3. oo

The pin or post I extends through the plate G and receives upon its end a nut L and above this nut upon the said pin or post is a gear wheel or pinion M, between which and the under face of the plate is a washer m. The two pinions are arranged to mesh with each other as shown in Fig. 1 and one of them is provided with an insulated handle or knob M.

The trolleyarms J are each supported yieldingly by means of the spring bracket or support N which consists of a piece of wire of proper size having its ends held in the plate or base-piece G and formed with one or more coils n and at its center bent to form the curved cross-bar a forming a concave seat for the trolley-arm as shown in the several views. These springs hold the trolley arms up against the conductor bars but with sufficient resiliency to permit of the necessary vibration thereof requisite upon the jolting of the car. In order to pull these springs down so that the trolley arms will clear the same when they are turned as w sen it is desired to reverse the direction of movement of the car I'provide the cords or chains or other devices 0 which are connected to the cross bars of the springs as shown and which are united and connected to the cord or chain P which passes vertically through a hole 9 in the plate or base-piece G as seen in the different views.

To guide the trolley arms in their movement I provide the guide and guard Q which consists of the wire having its ends held in the base-piece or plate G and its horizontal portion located at such a height as to receive the trolley arm as it is turned from its one position to the other.

WVith the parts constructed and arranged substantially as above set forth the operation will be readily understood, especially when taken in connection with the annexed drawin gs. The trolley wheels travel upon the conductor bars in the usual way. \Vhen the end of the line is reached the cord Pis pulled upon to pull down the spring supports and then by turning the handle M the gears are revolved and the posts I are turned and the trolley arms with their wheels turned about so as to bring them in position for the car to run in the opposite direction. As the trolley arms are moved they are supported upon the spring guides and guards Q, provided for that purpose. WVhen the trolley arms are in p0 sition the spring supports are allowed to return to their normal position and receive said arms.

Modifications in detail may be resorted to without departing from the spirit of the invention or sacrificing any of its advantages.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. Two separately swiveled, spring supported trolley-arms, combined with means for simultaneously turning the same, as set forth.

2. Two trolley-arms, combined with means for simultaneously turning the same, and a guide for the arms during their movement, as set forth.

3. The combination with a swiveled troly-a o a yielding upp herefor an a guide for said arm in its movement, as set forth.

4.. The combination with a swiveled trolicy-arm, ot' a spring support therefor, and means for depressing the support to allow the arm to turn,as set forth.

5. The combination of a swiveled trolleyarm, a spring support therefor, and means for depressing the support, and a guide for the arm in its movements, as set forth.

6. The combination with two trolley arms mounted for rotation, of means for simultaneously rotating the same, and depressible spring supports for said arms, as set forth.

7. The combination with the base-plate and the posts extended therethrough to swivel, of the trolley arms mounted in the upper ends thereof for pivotal movement, the intermeshing gears on the lower ends of the posts, means for turning one of the gears, and depressible spring supports for the said arms, as set forth.

8. The combination of a pivoted and swiveled trolley-arm, a depressible spring support therefor, and a guide and guard for said arm in its movements, and means for limiting the upward movement of said arm, as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES M. YOST.

Witnesses:

L. F. BURNER, GEO. K. FINCKEL. 

